STAT6 and nodular fasciitis: In recent studies, a diffuse and intense STAT6 staining was reported to be the most effective diagnostic marker for SFT.[12–14] Yoshida et al[12] demonstrated that only 4 (2.5%) of 159 non-SFTs showed a weak nuclear expression of STAT6, and Koelsche et al[13] reported that 5 (7.4%) of 68 dedifferentiated liposarcomas, 2 of 130 undifferentiated pleomorphic liposarcomas, and 1 (1.6%) of 63 cases of nodular fasciitis showed moderate to strong nuclear expression for STAT6.